I'm not 100% sure on this one but I think the Shad go deep?! In early to late spring here in Kentucky we had one hell of a time finding bait. We would throw the net for an hour or two sometimes and get only a handful of decent bait. And the ones we were catching, were on the bottom!!!! I just invested in a vaccuum packer and when I have decent bait leftover after a day out I'm taking it home with me and sealing it up and freezing it, that way I'll have bait all year round. Last night alone a filled six bags up with 3-4" shad and today I'm going below Markland Dam just to fish for bait. River Herring that is, can't beat em'!!!!